| URN | etd-0727117-165040 | Statistics | This thesis had been viewed 343 times. Download 3 times. |
| Author | Wen-Hao Li | ||
| Author's Email Address | No Public. | ||
| Department | Institute Of Mechanical Engineering | ||
| Year | 2016 | Semester | 2 |
| Degree | Master | Type of Document | Master's Thesis |
| Language | zh-TW.Big5 Chinese | Page Count | 136 |
| Title | Modal Testing and Finite Element Analysis of Automotive Flexplates | ||
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| Abstract | ˇ@ˇ@A flexplate is also known the driving plate, which is bolted to the crankshaft and the torque converter of the transmission system and assists to transmit the power. In an automatic transmission vehicle, the flexplate is no longer served to store the rotation energy ensuring the crankshaft to rotate smoothly, which responsibility has been taken by the torque converter with a larger moment of inertia. Nowadays, the flexplate assumes the responsibilities to start the engine and to cushion and withstand the impact loadings from the crankshaft and torque converter. This thesis investigates 18 types of flexplates, performs modal testing and finite element (FE) analysis, compares the analysis with the experimental results, and then updates the finite element models. ˇ@ˇ@The research performed modal testing experiment on 18 flexplates extracting their frequency response functions, and then utilized the software MEˇ¦scope to implement curve-fitting to extract the natural frequencies and mode shapes of the flexplates. Meanwhile, the finite element package ANSYS was used to build FE models and execute FE analysis on the flexplates, obtaining the natural frequencies and mode shapes of the FE models. Finally, the two sets of results were compared. If the frequency difference of the two results with the same mode shape was great, the FE model was adjusted to match the updated result with the experimental one. All updated models in this research can reasonably predict the dynamic characteristics of the flexplates, in agreement with the modal testing results. |
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| Files | indicate in-campus access at 5 years and off-campus access at 5 years | ||
| Date of Defense | 2017-07-20 | Date of Submission | 2017-07-27 |